From aefab2b4c01ee67f2b60e400e46bad63d29c2603 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sat, 22 Sep 2018 09:54:33 +0200 Subject: [PATCH] signal/arm64: For clarity separate the 3 signal sending cases in do_page_fault It gets easy to confuse what is going on when some code is shared and some not so stop sharing the trivial bits of signal generation to make future updates easier to understand. Reviewed-by: Catalin Marinas Tested-by: Catalin Marinas Signed-off-by: "Eric W. Biederman" --- arch/arm64/mm/fault.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index 0ddc8c6..14d6ff8 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -567,16 +567,16 @@ retry: return 0; } - clear_siginfo(&si); - si.si_addr = (void __user *)addr; - if (fault & VM_FAULT_SIGBUS) { /* * We had some memory, but were unable to successfully fix up * this page fault. */ + clear_siginfo(&si); si.si_signo = SIGBUS; si.si_code = BUS_ADRERR; + si.si_addr = (void __user *)addr; + __do_user_fault(&si, esr); } else if (fault & (VM_FAULT_HWPOISON_LARGE | VM_FAULT_HWPOISON)) { unsigned int lsb; @@ -584,20 +584,25 @@ retry: if (fault & VM_FAULT_HWPOISON_LARGE) lsb = hstate_index_to_shift(VM_FAULT_GET_HINDEX(fault)); + clear_siginfo(&si); si.si_signo = SIGBUS; si.si_code = BUS_MCEERR_AR; + si.si_addr = (void __user *)addr; si.si_addr_lsb = lsb; + __do_user_fault(&si, esr); } else { /* * Something tried to access memory that isn't in our memory * map. */ + clear_siginfo(&si); si.si_signo = SIGSEGV; si.si_code = fault == VM_FAULT_BADACCESS ? SEGV_ACCERR : SEGV_MAPERR; + si.si_addr = (void __user *)addr; + __do_user_fault(&si, esr); } - __do_user_fault(&si, esr); return 0; no_context: -- 2.7.4